JP2005515395A - Air conditioner with air conditioning function - Google Patents

Abstract

  The present invention relates to an air conditioner with a cooling / heating function having a new structure, and includes a compressor, an outdoor heat exchanger, an indoor heat exchanger, a four-way switching valve, and an indoor and outdoor heat exchanger, respectively. It is characterized by comprising a parallel capillary device, a parallel expansion valve device, or a complex of parallel capillaries and expansion valves. The parallel capillary device, the parallel expansion valve device, or the complex includes a two-position three-way electromagnetic valve or a one-way valve in the opposite direction, two groups of capillaries in parallel, two groups of expansion valves in parallel, Includes capillaries and expansion valves, or a composite of two groups of capillaries and expansion valves in series. The present invention provides a new generation air conditioning unit with a new structure, excellent performance, low energy consumption and high efficiency.

Description

  The present invention relates to an air conditioner with an air conditioning function (hereinafter also referred to as an air conditioning apparatus).

  At present, the throttle device of an air conditioner with an air conditioning function can be roughly classified into both a capillary throttle device and an expansion valve throttle device.

  Generally, a capillary squeezing device is one connected in series to one (or a group) of capillaries or another one (or a group) of capillaries connected in parallel to a one-way valve. It has one (or one group) capillary tube.

  In the former, since the flow is always restricted by the same capillary tube in the cooling operation mode and the heating operation mode, the air conditioner is not operated in the optimum state in the above two modes, that is, the cooling and heating operation modes. Furthermore, it is difficult to consider simultaneously two different modes for optimal design of the air conditioner.

  The latter can use different length capillaries to throttle the flow for both the cooling and heating modes by adjusting and controlling the one-way valve, but these two (or two groups) ) Are connected in series with each other, it is inconvenient to make an independent optimum design for each of the cooling and heating operation modes of the air conditioner.

  Similarly, the expansion valve throttling device has the same problem, i.e. it is difficult to consider simultaneously two different operating modes for the optimal design of the air conditioner.

  The object of the present invention is to overcome the above-mentioned drawbacks and provide an air conditioner with a cooling and heating function having a new structure, excellent performance and low energy consumption.

In order to achieve the above-described object of the present invention, the present invention provides a compressor, an outdoor heat exchanger, an indoor heat exchanger, a four-way switching valve, and a parallel connection connected to the indoor and outdoor heat exchangers. a cooling and heating function air conditioner that includes a capillary device, the parallel capillary apparatus, two-position and three-way solenoid valve or opposite two one-way valves, and the capillary parallel two-group, complexes of only including, with respect to the provision of the two one-way valve in the opposite direction, while one end of the one-way valve are connected directly to each of the outdoor heat exchanger, the other end of the one-way valve is the Regarding the provision of two-position three-way solenoid valves respectively connected to two groups of capillaries in parallel, one end of the solenoid valve that can switch the direction of the inlet and outlet is directly connected to the outdoor heat exchanger While the remaining two of the three-way solenoid valve To provide a cooling and heating function air conditioner according to claim whose ends are connected to the capillary of the second group.

  The parallel capillaries may include one or more capillaries connected in series and each having a different size and structure. A thermal engineering device such as a gas-liquid separator or an oil-liquid separator may be connected in series between each of the plurality of capillaries in series, and the size and structure of the capillaries are different types of air conditioners. May be selected according to In the cooling or heating operation mode, different capillaries may be selected in order to restrict the flows that are brought into different flow states by the adopted two-position three-way switching valve or one-way valve.

To achieve the above-mentioned object of the present invention, the present invention is further connected to a compressor, an outdoor heat exchanger, an indoor heat exchanger, a four-way switching valve, and the indoor and outdoor heat exchangers. a cooling and heating function the air-conditioning apparatus and a parallel expansion valve device, the parallel expansion valve apparatus, two-position three-way solenoid valve or a direction opposite to the two one-way valve, the expansion valve unit of the parallel two-group When, of the complex only contains, with respect to the provision of the two one-way valve in the opposite direction, while one end of the one-way valve are connected directly to each of the outdoor heat exchanger, the other of said one-way valve One end of the two-position three-way solenoid valve in which the direction of the inlet and outlet can be switched with respect to the provision of the two-position three-way solenoid valve. While the part is directly connected to the outdoor heat exchanger Providing the remaining two cooling and heating function air conditioner, wherein the ends are connected to the expansion valve of parallel second group of said three-way solenoid valve.

  The expansion valves may be the same or different, and a thermal engineering device such as a gas-liquid separator or an oil-liquid separator may be connected in series between each of a plurality of series expansion valves. . The type of the expansion valve may be selected according to a different type of air conditioning apparatus with an air conditioning function. In the cooling or heating operation mode, different expansion valves may be selected in order to restrict the flows that are brought into different flow states by the adopted two-position three-way switching valve or one-way valve. Any type of expansion valve that is commercially available can be employed.

To achieve the above object of the present invention, the present invention includes a compressor, an outdoor heat exchanger, and an indoor heat exchanger, a four-way switching valve, it parallel connected to indoor and outdoor heat exchangers a cooling and heating function air conditioner that includes a complex of a capillary and the expansion valve, apparatus complexes of the parallel capillary and the expansion valve, and two one-way valves of the two-position three-way solenoid valve or opposite , look-containing and a complex of the expansion valve of the capillary and a group of parallel a group, with respect to the provision of two way valve in the opposite direction, the one end of the one-way valve is the outdoor heat exchanger With respect to providing a two-position three-way solenoid valve, each connected directly, while the other end of the one-way valve is connected to a parallel group of capillaries and a group of expansion valves respectively. Can be switched two-way three-way One end of the solenoid valve is directly connected to the outdoor heat exchanger, while the other two ends of the three-way solenoid valve are connected to a parallel group of capillaries and a group of expansion valves, respectively. An air conditioner with an air conditioning function is provided.

In order to achieve the above-described object of the present invention, the present invention provides a compressor, an outdoor heat exchanger, an indoor heat exchanger, a four-way switching valve, and a parallel connection connected to the indoor and outdoor heat exchangers. An air conditioner with a cooling / heating function including a composite of a capillary and an expansion valve , wherein the parallel combination of the capillary and the expansion valve is a two-position three-way electromagnetic valve or two one-way valves in opposite directions , look-containing and a complex series capillary and the expansion valve of the parallel two-group, with respect to the provision of the two one-way valve in the opposite direction, the one end of the one-way valve is the outdoor heat exchanger With respect to providing a two-position three-way solenoid valve, with the other end of the one-way valve connected to a parallel two-group capillary and expansion valve complex in parallel, each connected directly. One of the solenoid valves whose direction is switchable While part is directly connected to the outdoor heat exchanger, heating and cooling, characterized in that the remaining two ends of three-way solenoid valve is connected to a complex series capillary and the expansion valve of the second group An air conditioner with a function is provided.

  In the air conditioning apparatus with an air conditioning function of the present invention, the number of capillaries and expansion valves may be one or more.

  From one or a group of capillaries in parallel and one or a group of expansion valves, or from two groups of one or more capillaries and one or more expansion valves connected in parallel The constructed composite has characteristics of both a capillary and an expansion valve, exhibits an equivalent effect and has superior performance. Furthermore, a thermal engineering device such as a gas-liquid separator or an oil-liquid separator may be connected in series between each of a plurality of capillaries in series or a plurality of expansion valves. In the cooling operation mode or the heating operation mode, different capillary and expansion valve composites are selected in order to restrict the flow that is made different by the two-position three-way switching valve or the one-way valve adopted. Also good.

  The air conditioning apparatus with a new air conditioning function of the present invention includes a compressor, an outdoor heat exchanger, an indoor heat exchanger, a four-way switching valve, a parallel capillary device, a parallel expansion valve device, or a parallel capillary. The parallel capillary device, the parallel expansion valve device, or the two groups of parallel capillaries and the expansion valve complex, respectively. And connected to an outdoor heat exchanger. Since the parallel capillary device, the expansion valve device, or the complex of the two parallel capillaries and the expansion valve in parallel are used in the air conditioner with a cooling / heating function of the present invention, the cooling operation mode and the heating operation are performed. In mode, one (or a group) of capillaries, one (or a group) of expansion valves, or a combination of capillaries and expansion valves, are employed to individually throttle the flow, and the two (or The two groups of capillaries, the two (or two groups) of expansion valves, or the complex of the two capillaries and expansion valves connected in series, function independently without interfering with each other. Therefore, the requirements for independent optimum design for the cooling operation mode and the heating operation mode of the air conditioner are satisfied, and the objectives of excellent performance, reduction of energy consumption, and improvement of efficiency can be achieved.

  The throttle device for an air conditioner according to the present invention employs the above-described structural arrangement for the following two technical reasons.

  (1) The conversion between the cooling operation mode and the heating operation mode of the air conditioner or the heat pump is achieved by switching the direction of the refrigerant flow through the condenser and the evaporator with a four-way switching valve. In FIG. 1, the structure of the system for both cooling and heating mode of operation is completely identical with respect to the basic part, but the situation is not so when considering the actual structure. Since the indoor machine and the outdoor machine separately attached to the air conditioner must be connected by the connecting pipe, and considering the pressure reduction in the cooling operation mode in the actual configuration, the part from the capillary to the indoor machine The diameter of the connecting pipe is smaller than the diameter of the connecting pipe from the indoor machine to the compressor. Therefore, the refrigerant flow circuit in the cooling operation mode is: compressor exhaust port-four-way valve-outdoor machine (condensation pipe)-capillary and one-way valve-small diameter connection pipe-indoor machine (evaporator)-large diameter Connection pipe-four-way valve-compressor intake port, while the refrigerant flow circuit in the heating operation mode is the compressor exhaust port-four-way valve-large-diameter connection pipe-indoor machine (condenser) -Small diameter connecting tube-Capillary tube and one-way valve-Outdoor machine (evaporator)-Four-way valve-Serves as a suction port for the compressor. Any attempt to obtain an additional throttling effect results in a pressure loss in the one-way valve and connecting pipe of the system. Compared to the inverse of the Carnot cycle, the throttling process of the system occurs mainly in capillaries, one-way valves and connecting pipes, and is equivalent to a multistage throttling device in series.

  Investigations based on serial two-stage constriction models and experiments of capillaries isolated from heat show that there are various flow blockages in a series of multi-stage constrictors. The inlet pressure of the next stage throttling device is not the outlet pressure of the previous stage throttling device, but its back pressure, while the system evaporation pressure is the back pressure of the last stage capillary. Due to the increase in capillary diameter, the flow blockage first occurs at the outlet of the last stage capillary and then gradually disappears, and then gradually the flow of the previous stage capillary until the flow blockage occurs at the outlet of the first capillary. Move to the exit. When flow obstruction occurs at the outlet of the second stage capillary, the next stage capillary cannot regulate the flow. For the reasons described above, the throttle device of the air conditioner of the present invention adopts the above-described structural arrangement. When the system is functioning in the heating mode of operation, the arrangement of throttling devices is a small diameter connecting tube-capillary-one-way valve, a flow blockage occurs at the outlet of the second stage capillary, and the next throttling device is It becomes a one-way valve that works only to obtain an additional throttling effect. While the system is functioning in the cooling mode of operation, the arrangement of throttling devices is a one-way valve-capillary-small diameter connecting tube, flow blockage occurs at the outlet of the second stage capillary, and the connection of the next stage The tube acts only to obtain an additional throttling effect. Therefore, the optimum throttling effect can be achieved by adjusting the evaporation pressure and the refrigerant flow according to the inner diameter and length of the capillary tube, and the most excellent energy consumption effect can be achieved.

  (2) In the cooling operation mode, the present invention adopts an arrangement in which the one-way valve is directly connected to the outdoor heat exchanger, that is, the one-way valve is arranged on the high pressure side. The reason for this design arrangement is that on the high-pressure side (that is, the refrigerant just flowing out of the condenser is in a high-temperature and high-pressure liquid state), the temperature of the refrigerant is higher than the ambient temperature, and the refrigerant is still radiating heat to the outside It is because it is in a state. In this state, the temperature of the gas-liquid phase change point of the refrigerant is high, the roll at the center of the one-way valve does not affect the flow and phase state of the refrigerant, and the refrigerant state stability before the flow is throttled by the capillary tube Is advantageous to increase the efficiency of the capillary drawing. On the other hand, if the one-way valve is arranged downstream of the capillary for constricting the flow, the state of the refrigerant changes to a low-temperature and low-pressure liquid because of the capillary constriction, and at this time, the temperature of the refrigerant In the heat absorption state due to the low pressure of the gas phase, that is, lower than the temperature, the refrigerant causes the phase change, so that it becomes easy to absorb the heat. In addition, when the one-way valve is disposed at the outlet of the capillary tube, a disturbance at the center of the one-way valve enhances circulation in the refrigerant state, and the refrigerant evaporates in advance. Furthermore, since the one-way valve is connected to the indoor heat exchanger via a long connection pipe, the amount of heat absorbed by the refrigerant increases while the refrigerant is flowing. As the amount of heat absorbed increases, the utilization efficiency ratio of the refrigerant decreases. Prior refrigerant phase change increases the flow resistance of the refrigerant along the path as well as increases ineffective refrigerant loss. In this way, the working efficiency of the system is reduced. To avoid such a situation, the one-way valve is first connected to the outdoor heat exchanger and then to the capillary.

  In the heating operation mode, the one-way valve is disposed on the downstream side of the capillary and is directly connected to the outdoor heat exchanger. The reason for this arrangement design is that the heating operation modes are different, that is, the heating operation mode always occurs at a low outdoor temperature. Due to the low ambient temperature in the heating operation mode, the temperature difference in the heat transfer between the ambient and the heat exchanger is small and the density of the heat flow through the wall surface is small, which is disadvantageous for the heat exchange of the refrigerant . The refrigerant maintains a unidirectional flow state and low heat exchange efficiency in a long flow process. At this time, the disadvantage that the heat exchange coefficient of the single-phase flow is small is changed by the sufficiently large heat exchange coefficient of the two-phase flow in which the change of the refrigerant state from the liquid phase to the gas-liquid phase is promoted This increases the heat transfer inside the heat exchanger. In this way, heat exchange is favored by increasing the utilization efficiency ratio of the heat exchanger. Accordingly, the one-way valve is arranged at the outlet of the capillary and is directly connected to the outdoor heat exchanger, so that disturbance at the center of the one-way valve enhances the circulation of the refrigerant state. On the other hand, it promotes the change of refrigerant from a liquid state to a two-phase flow state, and on the other hand, disturbance and mixing of the one-way valve promotes even the distribution ratio of the refrigerant and makes the separated refrigerant flow uniform. Increase the utilization of heat exchangers. In addition, the disturbance of the one-way valve promotes the evaporation and heat absorption of the refrigerant after the flow is throttled and promotes the change in the flow of the two phases of the refrigerant, increasing the utilization rate of the outdoor heat exchanger. Increase the operating efficiency of the system.

  For the air conditioner of the present invention, the compressor, the four-way switching valve, the indoor heat exchanger and the outdoor heat exchanger do not have any strict requirements, and they may be obtained on the market, It is selected according to different requirements of the air conditioner with air conditioning function.

  The present invention provides a new generation air-conditioning air conditioner with new structure, excellent performance, low energy consumption and high efficiency, and the present invention can be applied not only to air-conditioning apparatus with air-conditioning function, but also other cooling It can also be applied to equipment.

  The invention is further illustrated by the following examples in conjunction with the accompanying drawings. However, the protection scope of the present invention is not limited to the following examples, and selections and modifications by those skilled in the art may be made within the protection scope.

  As shown in FIG. 1, the first embodiment is a circulation system for a heating and cooling air conditioner including a parallel capillary device including a two-position three-way electromagnetic valve and two groups of parallel capillary tubes. Compressor 1, cooling / heating switch 8, four-way switching valve 2, outdoor heat exchanger 3, parallel capillary device 13 (two-position three-way electromagnetic valve 4, parallel cooling operation mode capillary 5 and heating operation) Mode capillary tube 6), indoor heat exchanger 7, connecting pipe, and other auxiliary means constitute a cooling or heating circulation system.

  The air conditioning switch 8 controls the valve positions of the four-way switching valve 2 and the two-position three-way electromagnetic valve 4. When the cooling operation mode is selected by the air conditioning switching switch 8, the refrigerant flowing out of the compressor 1 flows through the four-way switching valve 2 to the outdoor heat exchanger 3 and is condensed. This is selected so that the two-position three-way solenoid valve 4 is passed through the cooling capillary 5. The refrigerant evaporates for cooling in the indoor heat exchanger 7 and then returns to the compressor 1 through the four-way switching valve 2. When the heating operation mode is selected by the cooling / heating switch, the refrigerant flowing out of the compressor 1 flows through the four-way switching valve to the indoor heat exchanger 7 and is condensed for heating. This is selected so that the two-position three-way solenoid valve 4 is passed through the heating operation mode capillary 6. The refrigerant evaporates in the outdoor heat exchanger 3 and then returns to the compressor 1 through the four-way switching valve 2. In FIG. 1, a solid line arrow indicates a cooling cycle, and a broken line arrow indicates a heating cycle.

  As shown in FIG. 2, the second embodiment is a circulation system for an air conditioning air conditioning apparatus including a parallel capillary device including two one-way valves and two groups of parallel capillary tubes. Compressor 1, air-conditioning changeover switch 8, four-way selector valve 2, outdoor heat exchanger 3, parallel capillary device 13 (a series of one-way valve 9 for cooling operation mode and capillary tube 5 connected in parallel) A one-way valve 10 for heating operation mode and a capillary tube 6 in series), an indoor heat exchanger 7, a connecting pipe, and other auxiliary means constitute a cooling or heating circulation system. Yes.

  The air conditioning switch 8 controls the valve position of the four-way switching valve 2. In the cooling operation mode, the cooling operation mode one-way valve 9 is opened and the heating operation mode one-way valve 10 is closed so that the cooling operation mode capillary 5 functions. In the heating operation mode, the heating operation mode one-way valve 10 is opened so that the heating operation mode capillary 6 functions, and the cooling operation mode one-way valve 9 is closed. In FIG. 2, a solid line arrow shows a cooling cycle, and a broken line arrow shows a heating cycle.

  As shown in FIG. 3, the third embodiment is a circulation system of an air conditioning air conditioner including a parallel expansion valve device including a two-position three-way electromagnetic valve and two groups of expansion valves in parallel. Compressor 1, air conditioner switch 8, four-way selector valve 2, outdoor heat exchanger 3, parallel expansion valve device 14 (two-position three-way electromagnetic valve 4, parallel cooling operation mode expansion valve 11 and The heating operation mode expansion valve 12), the indoor heat exchanger 7, the connection pipe, and other auxiliary means constitute a cooling or heating circulation system.

  The air conditioning switch 8 controls the valve positions of both the four-way switching valve 2 and the two-position three-way electromagnetic valve 4. When the cooling state is selected by the air conditioning switching switch 8, the refrigerant flowing out of the compressor 1 flows through the four-way switching valve 2 to the outdoor heat exchanger 3 and is condensed. This is selected so that the two-position three-way solenoid valve 4 is allowed to pass through the cooling operation mode expansion valve 11. The refrigerant evaporates for cooling in the indoor heat exchanger 7 and then returns to the compressor 1 through the four-way switching valve 2. When the heating state is selected by the cooling / heating switch 8, the refrigerant flowing out of the compressor 1 flows into the indoor heat exchanger 7 and is condensed for heating. This is selected so that the two-position three-way solenoid valve 4 is passed through the expansion valve 12. The refrigerant evaporates in the outdoor heat exchanger 3 and then returns to the compressor 1 through the four-way switching valve 2. In FIG. 3, a solid line arrow indicates a cooling cycle, and a broken line arrow indicates a heating cycle.

  As shown in FIG. 4, the fourth embodiment is a circulation system for an air conditioning / heating air conditioner including a parallel expansion valve device including two one-way valves and two groups of expansion valves in parallel. Compressor 1, air-conditioning changeover switch 8, four-way selector valve 2, outdoor heat exchanger 3, parallel expansion valve device 14 (parallel-connected one-way valve 9 for cooling operation mode and expansion valve connected in parallel 11, a one-way valve 10 for heating operation mode and an expansion valve 12 in series), an indoor heat exchanger 7, a connecting pipe, and other auxiliary means are provided for the cooling or heating circulation system. It is composed.

  In the cooling operation mode, the cooling operation mode one-way valve 9 is opened and the heating operation mode one-way valve 10 is closed so that the cooling operation mode expansion valve 11 functions. In the heating operation mode, the heating operation mode one-way valve 10 is opened so that the heating operation mode one-way valve 12 functions, and the cooling operation mode one-way valve 9 is closed. In FIG. 4, a solid line arrow indicates a cooling cycle, and a broken line arrow indicates a heating cycle.

  Example 5 includes a parallel capillary and expansion valve complex comprising a two-position three-way solenoid valve 4 (as shown in FIG. 5) and a parallel group of capillaries and a group of expansion valves. It is a cooling or heating circulation system of an air conditioner provided. Compressor 1, air conditioning switch 8, four-way selector valve 2, outdoor heat exchanger 3, parallel capillary and expansion valve complex 15 (two-position three-way solenoid valve 4, parallel cooling operation mode The composite body including the capillaries 5 and the heating expansion valve 12), the indoor heat exchanger 7, the connecting pipe, and other auxiliary means constitute a cooling or heating circulation system.

  The valve positions of the four-way switching valve 2 and the two-position three-way electromagnetic valve 4 are controlled by an air conditioning switching switch 8. When a cooling operation mode is selected by the cooling / heating switch 8, the refrigerant flowing out of the compressor 1 flows through the four-way switching valve 2 to the outdoor heat exchanger 3 and is condensed. This is selected by the two-position three-way solenoid valve 4 so as to pass through the cooling operation mode capillary 5. The refrigerant evaporates in the indoor heat exchanger 7 and then returns to the compressor 1 through the four-way switching valve 2. When the heating operation mode is selected by the cooling / heating switch 8, the refrigerant flowing out of the compressor 1 flows through the four-way switching valve to the indoor heat exchanger 7 and is condensed for heating. This is selected by the two-position three-way solenoid valve 4 so as to be passed through the heating operation mode expansion valve 12. The refrigerant evaporates in the outdoor heat exchanger 3 and then returns to the compressor 1 through the four-way switching valve 2.

  In this embodiment, the composite of the cooling capillary 5 and the heating expansion valve 12 (not shown) may be replaced by a composite of the cooling expansion valve 11 and the heating capillary 6. Alternatively, as shown in FIG. 6, a two-way three-way solenoid valve 4 is connected to a parallel capillary tube and expansion valve, respectively, for a cooling operation mode one-way valve 9 and a heating operation mode one-way valve 10. It may be substituted by a complex of 5 and 6, solid line arrows indicate cooling cycles, and broken line arrows indicate heating cycles.

  Example 6 is a heating and cooling air comprising a composite of parallel capillary and expansion valves (not shown) comprising a composite of two one-way valves and two parallel groups of parallel capillaries and expansion valves. It is a circulation system of a harmony device. A complex including a compressor 1, an air conditioning switch 8, a four-way switching valve 2, an outdoor heat exchanger 3, and two groups of parallel capillaries and expansion valves in parallel (for example, a series connected in parallel In addition to the composite of the one-way valve 9 for cooling operation mode and the expansion valve 11 for cooling operation mode 11 connected to the capillaries 5, the heating operation mode in series with the one-way valve 10 for heating operation mode connected in series And the indoor heat exchanger 7, the connecting pipe, and other auxiliary means constitute a cooling or heating circulation system.

  The valve position of the four-way switching valve 2 is controlled by an air conditioning switching switch 8. In the cooling operation mode, the cooling operation mode one-way valve 9 is opened and the heating operation mode one-way valve 10 is closed so that the serial cooling operation mode capillary and the expansion valve function. In the heating state, the heating state one-way valve 10 is opened and the cooling operation mode one-way valve 9 is closed so that the series heating operation mode expansion valve and the capillary tube function.

  In this embodiment, the one-way valve for the cooling operation mode and the one-way valve for the heating operation mode may be substituted by a two-position three-way electromagnetic valve. Moreover, the number of capillaries and expansion valves in the composite of capillaries and expansion valves may be one or more.

It is the schematic which shows the Example of the circulation system of the air conditioning air conditioning apparatus provided with the parallel capillary device. It is the schematic which shows the other Example of the circulation system of the air conditioning air conditioning apparatus provided with the parallel capillary device. It is the schematic which shows the Example of the circulation system of the air conditioning air conditioning apparatus provided with the parallel expansion valve apparatus. It is the schematic which shows the other Example of the circulation system of the air conditioning air conditioning apparatus provided with the parallel expansion valve apparatus. It is the schematic which shows the Example of the circulation system of the air conditioning air conditioning apparatus provided with the apparatus with which the capillary tube and the expansion valve were mixed and connected. It is the schematic which shows the other Example of the circulation system of the air conditioning air conditioning apparatus provided with the apparatus with which the capillary tube and the expansion valve were mixed and connected.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Compressor 2 Four-way selector valve 3 Outdoor heat exchanger 4 Two-position three-way solenoid valve 5,6 Capillary tube 7 Indoor heat exchanger 8 Air-conditioning switch 9,10 One-way valve 11,12 Expansion valve 13 Parallel capillary device 14 Parallel Expansion valve device 15 Complex

Claims (13)

An air conditioner with a cooling / heating function comprising a compressor (1), an outdoor heat exchanger (3), an indoor heat exchanger (7), and a four-way switching valve (2),
A parallel capillary device (13) connected to the indoor and outdoor heat exchangers (7, 3);
The parallel capillary device (13) is a composite of a two-position three-way solenoid valve (4) or two opposite one-way valves (9, 10) and two groups of capillaries (5, 6) in parallel. An air conditioner with an air conditioning function, characterized by comprising An air conditioner with an air conditioning function according to claim 1,
The air conditioning apparatus with an air-conditioning function, wherein the two groups of capillaries in the parallel capillary device (13) each include at least one capillary having a different size and structure. An air conditioner with an air conditioning function according to claim 1,
Each of the capillaries in the parallel capillary device (13) is composed of a plurality of capillaries connected in series. An air conditioner with an air conditioning function according to claim 3,
An air conditioner with an air-conditioning function, wherein a thermal engineering device such as a gas-liquid separator or an oil-liquid separator is connected in series between each of a plurality of serial capillaries. An air conditioner with a cooling / heating function comprising a compressor (1), an outdoor heat exchanger (3), an indoor heat exchanger (7), and a four-way switching valve (2),
A parallel expansion valve device (14) connected to the indoor and outdoor heat exchangers (7, 3);
The parallel expansion valve device (14) includes a two-position three-way solenoid valve (4) or two one-way valves (9, 10) in opposite directions, and two groups of expansion valve devices (11, 12) in parallel. An air conditioner with an air-conditioning function, comprising the composite of It is an air conditioner with an air conditioning function according to claim 5,
Each of the two groups of expansion valves in the parallel expansion valve device (14) is composed of one expansion valve or a plurality of expansion valves connected in series. It is an air conditioning apparatus with an air conditioning function according to claim 6,
A thermal engineering device such as a gas-liquid separator or an oil-liquid separator is connected in series between each of a plurality of serial expansion valves. An air conditioner with a cooling / heating function comprising a compressor (1), an outdoor heat exchanger (3), an indoor heat exchanger (7), and a four-way switching valve (2),
Further comprising a parallel capillary and expansion valve complex (15) connected to the indoor and outdoor heat exchangers (7, 3);
The parallel capillary and expansion valve device complex (15) comprises a two-position three-way solenoid valve (4) or two opposite one-way valves (9, 10) and a group of capillaries and a group in parallel. And an air conditioning apparatus with an air-conditioning function. It is an air conditioning apparatus with an air conditioning function according to claim 8,
An air conditioner with an air-conditioning function, wherein a thermal engineering device such as a gas-liquid separator and an oil-liquid separator is connected in series between each of the series capillary and the expansion valve. It is an air conditioning apparatus with an air conditioning function according to claim 8,
With the cooling and heating function characterized in that the number of the capillaries in the complex (15) of the parallel capillaries (5) and the expansion valves (12) is one or more and the number of the expansion valves is one or more. Air conditioner. An air conditioner with a cooling / heating function comprising a compressor (1), an outdoor heat exchanger (3), an indoor heat exchanger (7), and a four-way switching valve (2),
Further comprising a parallel capillary and expansion valve complex (15) connected to the indoor and outdoor heat exchangers (7, 3);
The parallel capillary and expansion valve complex (15) comprises a two-position three-way solenoid valve (4) or two opposite one-way valves (9, 10) and two groups of parallel capillaries and expansions in parallel. An air conditioner with an air conditioning function, comprising a composite of valves. It is an air conditioning apparatus with an air conditioning function according to claim 11,
A thermal engineering device such as a gas-liquid separator and an oil-liquid separator is connected in series between each of the serial capillary tube and the expansion valve. It is an air conditioning apparatus with an air conditioning function according to claim 11,
The number of the capillaries (5) in the complex of the series capillary (5) and the expansion valve (12) is one or more, and the number of the expansion valves (12) is one or more. Air conditioner with air conditioning function.

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